package com.heima.admin.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.admin.mapper.AdChannelMapper;
import com.heima.admin.service.AdChannelService;
import com.heima.model.admin.pojos.AdChannel;
import com.heima.model.common.dtos.PageResponseResult;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.dtos.ChannelDto;
import org.apache.commons.lang3.StringUtils;
import org.springframework.stereotype.Service;

import java.util.Date;

@Service
public class AdChannelServiceImpl extends ServiceImpl<AdChannelMapper,AdChannel> implements AdChannelService {
    @Override
    public ResponseResult findByNameAndPage(ChannelDto dto) {
        //1.参数检测
        if(dto==null){
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }
        //分页参数检查
        dto.checkParam();
        //2.按名称模糊分页查询
        Page page = new Page(dto.getPage(),dto.getSize());
        LambdaQueryWrapper<AdChannel> lambdaQueryWrapper = Wrappers.lambdaQuery();
        if(StringUtils.isNotBlank(dto.getName())){
            lambdaQueryWrapper.like(AdChannel::getName,dto.getName());
        }
        // 添加排序
        lambdaQueryWrapper.orderByAsc(AdChannel::getOrd);

        IPage result = page(page, lambdaQueryWrapper);
        //3.结果封装
        ResponseResult responseResult =
                new PageResponseResult(dto.getPage(),dto.getSize(),result.getTotal());
        responseResult.setData(result.getRecords());
        return responseResult;

    }

    /**
     * 新增
     * @param adChannel
     * @return
     */
    @Override
    public ResponseResult insert(AdChannel adChannel) {
        // 1 参数校验
        if (adChannel == null || StringUtils.isBlank(adChannel.getName())) {
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_REQUIRE);
        }
        // 2 判断该频道是否存在

        int count = this.count(Wrappers.<AdChannel>lambdaQuery()
                .eq(AdChannel::getName, adChannel.getName()));
        if(count > 0){
            return ResponseResult.errorResult(AppHttpCodeEnum.DATA_EXIST,"该频道已存在");
        }
        // 3 执行新增
        adChannel.setCreatedTime(new Date());
        save(adChannel);
        // 4 返回结果
        return ResponseResult.okResult();
    }

    @Override
    public ResponseResult deleteById(Integer id) {

        if (id == null) {
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }

        AdChannel adChannel = getById(id);
        if (adChannel == null) {
            return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST);
        }
        if (adChannel.getStatus()) {
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_REQUIRE);
        }

        removeById(id);
        return ResponseResult.errorResult(AppHttpCodeEnum.SUCCESS);
    }
}
